gf = {"name":"高圆圆","age":32}
# print(len(gf))
#
# gf["age"] = 27
# print(gf)
# gf["height"] = 175
# print(gf)
#
# l = [1, 2, 3]
# del l[2]
# print(l)
# del l

# del gf
# print(gf)
# del gf["age"]
# print(gf)
print(gf["name"])


print("names" in gf)
print("age" in gf)